Temple for looms

ABSTRACT

A temple for looms includes, mounted on the bar at which the newly woven cloth is deflected out of the weaving plane to pass over a stretching element, a finger-like guide member adjustable lengthwise of the temple in the plane of the cloth for control of the edge warps. The guide member is carried on a support displaced perpendicularly out of the weaving plane to separate the edge warps from the weaving plane.

United States Patent Luber [451 June 27, 1972 541 TEMPLE FOR LOOMS 3,174,516 3/1965 Steiner ..139/292 [72] Inventor: Paul Luber, Winterthur, Switzerland FOREIGN PATENTS OR APPLICATIONS 1 Assignee: Sulzer Brothers Limited, Winterthur, Swit- 208,205 10/1923 Great Britain ..139/294 zerland [22] Filed: 4 1970 Primary Examiner-Henry S. Jaudon Attorney-Pennie, Edmonds, Morton, Taylor and Adams [21] Appl. No.: 60,871

[57] ABSTRACT Foreign pp Priority Data A temple for looms includes, mounted on the bar at which the Aug. 12 1969 Switzerland ..l2219/69 newly is deflected the weaving Plane pass over a stretching element, a finger-like guide member ad- 521 US. Cl ..139/295 Jumble lengthwise Ofthe temple in the 0f the clth 51 1m. (:1. ..D03j 1 22 Control of the edge warps- The guide member is carried on a [58] Field of Search 139/292, 301 Support displaced perpendicularly out of the Weavlng Plane to separate the edge warps from the weaving plane. [56] Rem-em cued 5 Claims, 8 Drawing Figures UNITED STATES PATENTS 2,666,457 l/l954 Dewas ..l39/295 PATENTEDJUHN I972 3, 672,407

sum 10F 3 Inventor:

Poul L'u' ber M M J ZVLJQAM ATTORNEYS PATENTEDJUMN I972 SHEET 2 BF 3 G b x Inventor Poul L'u'ber MJ QQQW ATTORNEYS P'A'TENTEnJum 1972 3. 672,407

sum 3 or 3 lnventor= Poul L'u'ber BY W I MJigZrr-MW ATTORNEYS TEMPLE FOR LOOMS The present invention pertains to looms and more particularly to temples therefor, in which the cloth is deflected by the edge of a bar or the like out of the weaving plane to pass over the spreader member of the temple. The invention provides a temple of this type including a finger-like guide member supported adjacent the deflecting edge for control of the edge warps.

In the operation of a loom, the cloth is customarily stretched laterally out to its full width by means of temples disposed on either side of the loom immediately downstream of the fell where the cloth originates by beating up of the wefts. Various types of temples have been proposed. Most of them include a cloth deflecting or deviating bar at the entering and exit sides thereof, these bars extending transversely of the length of the warp threads. The bars may be constituted as the opposite sides of a single channel member. At these bars the cloth is deviated out of the weaving plane so as to be pressed against the operative element of the temple by the tension in the warp threads lengthwise of the cloth. The operative element of the temple may take the form of a roll provided with pins in the surface thereof, or of a rod having a thread formed in the surface thereof and supported in a grooved bar.

By reason of the elasticity of the warp and weft threads, and because of unavoidable small irregularities therein, it can occur that the cloth does not pass through the loom exactly longitudinally. Rather, it may have occasional tendencies to shift sideways. These are only small shifts since the warp threads are guided down as far as the fell by the reed. Nevertheless it can occur that the outermost warp threads will slip off the end of the deflecting bar at the entrance to the temple, so that the edge of the cloth becomes caught on part of the mechanism and is damaged with resultant injury to the selvage. I

It is an object of the invention to surmount this defect. In accordance with the invention the temple includes a finger-like guide member which extends transversely of the cloth, i.e. out of the plane of the cloth, and which is mounted on the deflecting bar at which the cloth enters the temple for adjustment in position laterally of the cloth, i.e. transversely of the warps but in or parallel to the plane of the cloth, and which is also advantageously adjustable transversely of the cloth, i.e. perpendicularly of the plane of the cloth. Since the cloth is stretched lengthwise by the warp let-off motion and by the cloth take-up motion, it is pressed against the deflecting bar and the edge of the cloth cannot ride over the finger-like guide member affixed to the deflecting bar. Lateral shift of the cloth is thus prevented and the proper formation of a selvage is promoted.

In looms in which the weft thread supply remains outside the shed and in which the weft is cut off after each pick, with the weft ends being tucked into the shed by tuck-in needles after shed change for the formation of the selvage, it is possible with the help of the present invention to form a very narrow selvage by proper fastening of the guide member to the deflecting bar. It has been proposed in U.S. Pat. No. 3,174,516 to tuck the weft thread ends into the shed over only a portion of their length, so that the remainder of the weft end hangs freely out of the selvage, i.e. out of the cloth. This is achieved by providing a jog, notch or offset in the deflecting bar at a point close to the edge of the cloth. The result is that at the position of this offset, the fell of the cloth exhibits a similar jog. In its motion out towards the edge of the cloth to seize a weft end, the tuck-in needle then penetrates the shed at the transition point between the warp threads which are raised by this jog and the remaining warps at the edge of the cloth. Passing out of the shed above the remaining lower shed warps, the needle seizes a weft end beyond the cloth edge and returns with it. The weft end is then bound in, on the next shed change, only by those warps which are laterally outboard of the notch point, and the remainder of the weft end hangs freely below the cloth. The selvage so formed is narrower than is the case when the weft end is bound into the cloth over its entire length. A similar result can be achieved with the present invention, by providing for the guide member a carrier or supporting device which itself functions as a deflecting bar for the warps engaged by it and whose deflecting edge is displaced transversely of the plane of the cloth by reference to the normal deflecting bar which extends over the remainder of the length of the temple.

The'outermost warps, i.e. those engaged by this carrier, constitute a short piece of the fell or shed apex which is displaced transversely of the weaving plane with respect to the remainder of the shed apex and which may be a few millimeters lower. The tuck-in needle can consequentely be so adjusted to penetrate the shed at the transition between the portion of the fell so displaced and that not so displaced, so as to tuck the weft ends into the shed only as to the displaced portion thereof. With such an arrangement, in contrast to the usual one, the deflecting bar of the temple need not be provided with the notch or offset above described. This provides a substantial simplification in its construction; the deflecting bar can be straight and the temples are interchangeable with the usual ones. Since the auxiliary deflecting bar constituted by this carrier is fixed to the finger-like guide member, a shift the of the carrier will shift location of the cloth edge and simultaneously the penetration point for the tuck-in needle. The result is that the selvage is always of the same width, specified by the length of the auxiliary deflecting bar constituted by the guide member carrier.

In order to avoid any undesired irregularity at the transition between the ground of the cloth and the selvage, it is possible according to a further feature of the invention to give to the carrier a bevelled or inclined shape at the end thereof remote from the finger-like guide member, this bevelled portion constituting a transition between the displaced deflecting bar formed by the carrier and the main deflecting bar. In a preferred embodiment of the invention the warp threads of the loom are arranged to present a gap therein in the vicinity of the bevelled transition portion of the auxiliary deflecting bar provided by the carrier, crossing or bending warps being provided at both sides of this gap in known fashion. The selvage tuck-in needle then penetrates the shed at this gap. The result is the formation of a selvage which is connected to the remainder of the fabric via a strip of warp-free wefts. At this strip the selvage can, if desired, be thereafter cut off from the remainder of the cloth.

The carrier for the finger-like guide member can take any desired form. In a preferred embodiment of the invention the guide member is supported on the main deflecting bar by means of a stirrup of U-shaped cross-section having two resilient side members joined by a web.

The amount of displacement of the auxiliary deflecting bar from the remainder of the fell should be adjusted to the properties of the cloth being woven, e.g. to the thickness of the warp and weft threads. To this end the U-shaped carrier may include a spacer between the web thereof and the main deflecting bar. The dimensions of the spacer will be adjusted to the warp and weft thread sizes as above indicated.

In another embodiment of the invention the normal deflecting bar of the temple may have a slot formed therein, the carrier for the finger-like guide member being insertable into this slot.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be further described in terms of a number of exemplary embodiments thereof and with reference to the accompanying drawings in which:

FIG. 1 is a simplified schematic diagram of a loom, useful for explaining the invention;

FIG. 2 is a fragmentary perspective view of a temple in accordance with the invention;

FIG. 3 is a fragmentary view in elevation of a temple in accordance with the invention, seen lengthwise of the warp threads;

FIG. 4 is a view in end elevation taken along the line lV-IV of FIG. 3;

FIGS. 5 and 6 are views respectively similar to FIGS. 3 and 4 but showing a modified temple construction in accordance with the invention;

FIG. 7 is a further view respectively similar to FIG. 3, but showing still another temple in accordance with the invention; and

FIG. 8 is a fragmentary perspective view of the apparatus of FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 warp threads 1 are pulled off of a warp beam 2, pass over a tension beam 3 and pass to heddle frames 4 and 5 which separate the warps into upper and lower shed halves la and lb to form the shed 6. The reed is shown at 7 for beating up the weft threads inserted by means of a shuttle 8. The shuttle of course moves perpendicularly to the plane of the drawing. The beat up motion of the reed is in the direction indicated by the curved arrow. After each weft has been beaten up, the shed is changed in the usual fashion. The finished cloth is shown at 11. As soon as the cloth is formed at the fell 9, it is stretched laterally, i.e. perpendicularly to the plane of the drawing, by means of temples, one at each side of the cloth, each including a cover element 12 and a stretching element 13. The element 13 may take the form of a roll having pins covering its surface and partially enclosed by the cover element 12. Thus the cloth 11 is deflected upwardly at the entering (left) end 15a, over the roller 13, and back to the horizontal at the leaving end 15b of the temples. In so passing over the roller 13 of the temples the cloth is stretched laterally, i.e. perpendicularly of the plane of the figure but in the weaving plane indicated by the cloth l1 and by the position of the warps when in closed shed position. Reference character 14 represents a breast beam, shown in exemplary fashion as a fixed element, for changing the direction of motion of the cloth. A cloth pull-off roll 16 pulls the cloth from the loom. After a further change of direction about a roll 17, the cloth is wound up on a cloth beam 18.

FIG. 2 shows the passage of the edge of the cloth through the temple. The temple cover 12 has the shape of a channel member, and is functionally equivalent, for the purpose of effecting engagement of the cloth with the roller 13, to a pair of bars upstream and downstream of the roller. The upstream bar has an edge 15a at which the newly formed cloth is deflected out of the weaving plane to pass over the roller 13. The cloth as formed at the fell 9 thus enters the temple at the entering edge 15a of the temple cover 12 and is there deflected upwardly out of the weaving plane to pass over the pin roller 13. The pins are fastened at the periphery by means of oblique, small discs and serve to pull the cloth laterally. At the exit edge 15b of the cover 12 the cloth returns to the weaving plane.

By reason of the tension in the warp threads, and by reason of the motion of the sand roll 16 (FIG. 1), the cloth is held taut at the entering and leaving edges 15a and 15b and over the pin roller. In order to guide the edge 10 of the cloth at the entering edge 15a, a guide member or finger 22 is formed on or afflxed to a U-shaped carrier 23 at the outer end of the entering edge 15a, carrier 23 being adjustable along the edge 15a crosswise of the fabric. The finger 22 extends from the carrier 23 transversely of the plane of the cloth and forms one limb of an L- shaped guide of which the other limb is formed by the carrier 23 extending parallel to the plane of the cloth. A spacer 26 seen in FIGS. 3 and 4 is enclosed between the side members 23a, 23b and the web 230 of the carrier 23. The spacer serves to displace the carrier 23, and thereby the auxiliary deflecting edge which the web 230 of the carrier constitutes transversely of the weaving plane with reference to the deflecting edge 15a by a desired amount. As is seen in FIG. 3, the auxiliary deflecting edge 230 of the carrier 23 and the finger 22 together constitute an L-shaped guide, with the limb of the L formed by the finger 22 extending transversely of the plane of the cloth and with the limb of the L formed by the auxiliary deflecting edge 230 extending substantially parallel to the plane of the cloth. A diagonal or bevelled portion 25 on the spacer 26 provides a transition between the auxiliary edge 24 and the deflecting edge 150. At the position of diagonal portion 25 there is left a free space 20 among the warp threads so that the tuck-in needle 19 (FIG. 2) can penetrate the shed, pass outside the side of the shed, seize the end of the weft which was inserted before the last shed change and which is temporarily held by an edge clamp not shown, and tuck it into the shed. In this way the weft end 21 so tucked in is bound only by the warps engaging the auxiliary edge 23c, i.e. over the width 10a in FIG. 3, and the remainder of the weft end is withdrawn by the needle from the shed downwardly at the gap 20. The result is to form only a narrow selvage of width 10a. In the finished cloth the gap 20 constitutes a strip of warp-free wefts lengthwise of which strip the selvage can, if desired, be cut off, if care has been taken to insure that the wefts are bound on both sides of the gap by means of crossing threads 1c.

FIGS. 5 and 6 illustrate a simplified construction of the U- shaped clip or carrier 23 for the guide member 22 not employing the spacer 26. Here the tucked in weft ends are woven into the full length thereof to produce a relatively wide selvage. In FIG. 6 the unstressed position of the side members 23a and 23b is shown in chain dotted lines to illustrate the spring stress by which the carrier 23 is secured to the edge 15a of the temple cover 12.

In the embodiment of FIGS. 7 and 8 the deflecting edge 15a of the temple is provided with a longitudinal slot 27 in which the carrier 23 for the guide finger 22 is held by means of a spring strip 28 of wave shape, the spring being pre-stressed with a desired bowing. In this case also the guide member 22 and its carrier can be shifted if desired over the entire length of the edge 15a and the slot 27 thereof.

While the invention has been hereinabove described in terms of a presently preferred embodiment, the invention itself is not limited thereto but rather comprehends all modifcations of and departures from that embodiment properly falling within the scope of the appended claims.

Iclaim:

l. A temple for looms comprising means defining an edge past which the cloth being formed is drawn into the temple to be deflected from the weaving plane into contact with a stretching element, and an L-shaped guide disposed on said edge side of said stretching element, said guide being supported on said edge-defining means with one limb of the L extending transversely of the plane of the cloth and with the other limb of the L extending substantially parallel to the plane of the cloth, said guide being supported on said edgedefining means for adjustment in position parallel to the plane of the cloth and transversely of the plane of the cloth.

2. A temple for looms according to claim 1 wherein the other limb of the L defines an auxiliary cloth deflecting edge extending substantially parallel t to but displaced from said first-named edge, said temple further including means defin ing a bevelled edge extending transitionally between said firstnamed edge and said auxiliary deflecting edge.

3. A temple for looms, said temple comprising means defining an edge past which the cloth moves to be deflected into contact with a stretching element, a guide finger positioned adjacent said edge and extending transversely of the plane of the cloth for guidance of the edge warps, and a clip of U- shaped cross-section supporting said guide finger, said clip being engaged on said edge-defining means, said clip having an auxiliary cloth-deflecting edge displaced transversely of the plane of the cloth from said first-named edge.

4. A temple according to claim 3 including a spacer engaged between said clip and edge-defining means.

5. A temple for looms, said temple comprising means defining an edge past which the cloth moves to be deflected into contact with a stretching element, and a guide member supported adjacent said edge and extending transversely of the plane of the cloth for guidance of the edge warps, said edgedefining means having a slot therein and said guide member being supported from said slot. 

1. A temple for looms comprising means defining an edge past which the cloth being formed is drawn into the temple to be deflected from the weaving plane into conTact with a stretching element, and an L-shaped guide disposed on said edge side of said stretching element, said guide being supported on said edgedefining means with one limb of the L extending transversely of the plane of the cloth and with the other limb of the L extending substantially parallel to the plane of the cloth, said guide being supported on said edge-defining means for adjustment in position parallel to the plane of the cloth and transversely of the plane of the cloth.
 2. A temple for looms according to claim 1 wherein the other limb of the L defines an auxiliary cloth deflecting edge extending substantially parallel t to but displaced from said first-named edge, said temple further including means defining a bevelled edge extending transitionally between said first-named edge and said auxiliary deflecting edge.
 3. A temple for looms, said temple comprising means defining an edge past which the cloth moves to be deflected into contact with a stretching element, a guide finger positioned adjacent said edge and extending transversely of the plane of the cloth for guidance of the edge warps, and a clip of U-shaped cross-section supporting said guide finger, said clip being engaged on said edge-defining means, said clip having an auxiliary cloth-deflecting edge displaced transversely of the plane of the cloth from said first-named edge.
 4. A temple according to claim 3 including a spacer engaged between said clip and edge-defining means.
 5. A temple for looms, said temple comprising means defining an edge past which the cloth moves to be deflected into contact with a stretching element, and a guide member supported adjacent said edge and extending transversely of the plane of the cloth for guidance of the edge warps, said edge-defining means having a slot therein and said guide member being supported from said slot. 